Improvement in hinges



N s PHOTOvLITHOGRAPHER, WASH NGTDN D C STATES PATENT" OFFICE'.

A. VVHELAN, OF WASHINGTON, `DISTRIOT OF COLUMBIA, ASSIGNOR TO HIMSELFAND JOSEPH W. PARE-ISH, OF SAME PLAGE.

IMPROVEMENT IN I-IINCT'ES.

iSpem'jcat/on fowning part of Letters Patent No. 85,977, dated January19, 1869.

To all Iwhom Iit may concern Be it known that I, ALEXANDER WHELAN, oi'the city ot' Washington, in the county of Washington and District ofUoluinbia, have invented a new and useful Improvement in H iuges forWindow-Shutters and other similar uses; and I do hereby declare that thefollowing is ai'ull, clear, and exact description thereof, referencebein g had to the accompanying drawings and the letters oi'rei'ereneemarked thereon, in which- Figure l is a View of an open hinge made inaccordance with niy invention. Fig. 2 is a view of that part of thehinge which is attached to the window-frame; and Fig. 3 isa sectionalview of that part of the hinge 'which is attached to the shutter in theline x, Fig. Vl.

A is the part of the hinge to be attached to windowf'raine, and B thepart to be attached to the shutter. C is the pivot on which the movablepart of the hinge turns. fi t" are helical inclined shoulders at thehase of the pivot U. There are two opposite projections at the b ase ofsaid pivot,'each forming two inclined shoulders, t and t', meeting attheir upper extremities, and forming V-shaped points o and n on saidprojections. The inclinez' is somewhat more inclined, and consequentlyrsomewhat longer, than the incline t. The socket l) in the part B, intowhich the pivot C tits, has at its base inclined helical shouldersj andj', exactly corresponding in form with the inclined shoulders i t" ofthe pivot. The inclined shoulders ot' the pivot and the socket are solocated that whenever the hinge is opened, so that the two wings A and Bwill be in the saine plane, the socket will come down on the pivot toits base, forming a close joint. And so, again, when the shutteristhrown open, so as to close the leaves oi' tho hinge one upon the other,the socket will iitV down upon the base of the pivot in like manner,forming a close joint. Thus, the socket being closed at its upper end,and a perfectly tight joint being formed, whether the shutter be open orclosed, no water can enter any part of the joint, to cause a rusting ofthe metal, or ice in winter. The inclines ot' the pivot and socket areso arranged that when the shutter is thrown clear open against the wall,and the leaves, A and B of the hinge are in the same plane, the inclinet" of the pivot is in close contact with the incline j. of the socket,and this will hold the shutter back against the wall until considerableforce is applied to move it, thus obviating the necessity of any otherfastening to hold the shutter against the wall. But when suliieientforce is applied to overcome this resistance, the moment the shutterbegins to turn on the hinge, the in clinej of the socket will rise uponthe incline i of the pivot, elevating the shutter, until the points ot'said inclines pass each other, at which time the shutter will beein todescend, the inclinej of the socket sliding down on the incline 1', ofthe pivot; and said inclines are so arranged that the socket will dropclear down to the base of the pivot before the upper part of the shutterreaches the cap of the windowfraine, andthe shutter will swing home inthe same plane, clearing said cap, none `ot the inclines coming incontact. In like manner, in opening the shutter, it will swing in thesanne plane, none of the inclines coming in contact until it has clearedsaid cap of the windowframe.

I do not limit my claim to this invention in its application toWindow-shutters, but claim its application to doors and gates.

I do not claim, broadly, thcleaves oi'a hinge with the double set ofinclines; but

What I do claim as new, and desire to secure by Letters Patent of theUnited States, 1s-

The combination and arrangement of the two sets of inclines t' and i andj and j', with relation to the pivot and socket of a hinge,

-constructed as described, whereby the shutter is made to clear thewindowframe before being raised by the said inclines.

A. WHELAN. Witnesses: J. J. CooMns, A. L. MERRiMAN.

